/* Copyright (c) 2008, 2009, 2010, 2011 Damian Kmiecik
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:

   * Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
   * Neither the name of the copyright holders nor the names of
     contributors may be used to endorse or promote products derived
     from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  POSSIBILITY OF SUCH DAMAGE. */

#ifndef DS1307_H_
#define DS1307_H_

#include "main.h"
#include "twi.h"

#ifdef USE_RTC

#define RTC_ADDR			0xD0

//#define RTC_USE_RAM

#define RTC_CONTROL_ADDR	0x07
#define RTC_SECONDS_ADDR	0x00
#define RTC_MINUTES_ADDR	0x01
#define RTC_HOURS_ADDR		0x02
#define RTC_DATE_ADDR		0x04
#define RTC_MONTH_ADDR		0x05
#define RTC_YEAR_ADDR		0x06

extern void rtcInit(void);
extern void updateTime(void);
extern void setTime(void);
#ifdef RTC_USE_RAM
extern uint8_t rtcReadByte(uint8_t addr);
extern void rtcWriteByte(uint8_t addr, uint8_t val);
extern void rtcMemRead(uint8_t addr, uint8_t *buf, uint8_t len);
extern void rtcMemWrite(uint8_t addr, uint8_t *buf, uint8_t len);
#endif

#endif

#endif /* DS1307_H_ */
